Opinions expressed by Entrepreneur contributors are their own. Amazon Fire Phone, Google Glass, New Coke and Nintendo’s Virtual Boy: What do all these products have in common? They didn’t sell.

Regent Craft received U.S. Coast Guard approval to test its Viceroy seaglider prototype. The 12-passenger seaglider is designed for 180-mile flights at 180 mph, combining aircraft speed with boat ...

The video shows the prototype during in-water testing, performing some diving and resurfacing maneuvers as part of the submerged operations’ testing. After the first photos released last month, ...

“The clients we work with whose parts must meet various certifications – UL, FAA, and MIL-spec, among others – need to have a ‘real’ part to test against their real-world challenges. RPM facilitates ...

Start-up Archer Aviation has finished assembling a prototype of its in-development electric air taxi Midnight and aims to begin flight testing the aircraft this summer. The prototype is not, however, ...

No mention has been made on electronic safety and control systems, a feature that has certainly been part of the testing strategy. Triumph has plenty of expertise on tuning electronic kits to handle ...

Vertical Aerospace completed the first phase of crewed testing for its VX4 eVTOL aircraft, involving tethered hover flights and various simulated failure scenarios. The VX4 prototype demonstrated a 20 ...

Vertical Aerospace expects to complete its second VX4 prototype “in the coming weeks”, leading to the restart of its flight-test programme in the second quarter. UK-based start-up Vertical has already ...